State Farm "Drive Safe and Save"

Okay, if that is correct, then it seems that the phone and the beacon are not communicating if you are in the garage. While I do not use the app, it would sound like that is the problem. Did you speak with your agent, State Farm support, or the app support information provided in the App Store? Someone else has had to experienced a similar problem. I will have lunch with my State Farm agent tomorrow and can ask her if she is aware of a problem like this or someone she can talk to and get back to you tomorrow afternoon. FYI, I'm in the Central time zone in the US.

If you are really using iOS 15.2, that is beta software and issues with apps or the phone on beta software cannot be discussed here on the public forum. You would need to report beta issues with the feedback app that you got as part of the beta program.

Glad you were able to get it working, if even temporarily. I didn't see my agent at lunch Friday, so I left her a message and she called me back and was going to get her office's person responsible for that program to call me back. She said she had not heard of an issue like that, but would still have the person call me. Well, they didn't, so I expect a call back on Monday.

Given your mention of possible interference, see this support document from Apple and see if that helps with your troubleshooting the other Bluetooth devices. Resolve Wi-Fi and Bluetooth issues caused by wireless interference - Apple Support

"the app working as it should EXCEPT when my trip starts in my garage. "

I wonder if while your car is in your garage, that the phone is connected to your home WiFi. When you leave your garage your phone switches over to a cell connection and confuses the app?

No problem, just had to be sure. Have you checked to see if there is an update available for the app? If not, I suggest that you contact the app developer and ensure that it is compatible with the latest iOS update. It is difficult to say, since you are using two different iPhones. You say that your wife's is an an 11 and you have a 12. Is this only one car you are referring to for both of you? I wonder as well as the other poster about it starting in your garage, and then you respond about a working iPhone 12? Does your wife have an iPhone 12 now?

Have you tried unpairing the beacon with your iPhone and then pairing it again? Did you name your new iPhone with the same name as the iPhone 11 you got rid of?

EDIT: Guess your statement you just added about the beacon negates my question. I really don't see any other issue, except maybe try turning off wi-fi before you leave the house to see if you can start a trip while it is on cellular data while in the garage.

There is a problem with Drive Safe and Save App and ios15. State Farm Drive Safe and Save support confirmed this to me. They told me that they are aware of it, and working on a fix. They told me in the mean time to go to the App settings for Drive Save and Safe and turn off location and turn it back on, and then turn off Blue tooth and turn it back on, then turn the phone off and turn it back on. This has worked for me some times. I did have to call the State Farm support people a number of times to finally get someone who knew what they were talking about. The issue happens on both my SE phone and 13mini.